Idea

The word idea is an abstract thought or concept which people use to communicate their beliefs or plans. Generally, an idea is a plan one conceives for action. Less practically, an Idea, (capitalized), is a central meaning or purpose, it's a notion, an opinion.

Different definitions of idea

1. a thought or suggestion as to a possible course of action • they don't think it's a very good idea.

2. a concept or mental impression • our menu list will give you some idea of how interesting a low-fat diet can be.

3. an opinion or belief • nineteenth-century ideas about drinking.

4. (the idea) — the aim or purpose. For example, I took a job with the idea of getting some money together.

5. [Philosophy] (in Platonic thought) an eternally existing pattern of which individual things in any class are imperfect copies.

6. (In Kantian thought): a concept of pure reason, not empirically based in experience.